=>
10. The situation is serious. Something must be done before it's too late.
11. The concert has been postponed.
12. A new supermarket is going to be built next week.
13. Has the car been repaired by your father?
14. Bananas are exported to Europe.
15. We were advised not to go out alone.
16. The book was found in his bag.
17. We aren't allowed to leave the room.
18. He is being laughed at by some naughty boys.
19. Hiss exercises have just been finished.
20. Grass was being cut when it began to rain.
21. Much of it wasn't used effectively. 
22. Is a new school being built for the poor?
23. He hasn't been seen since last week.
24. Was fish cooked for dinner?
25. The shop was being searched by police when the keeper arrived.
26. His exercises were finished on time.
27. Rice is planted in those fields.
28. My windows were broken by this boy yesterday.
30. He has been known well.
31. He will be met at the station.
32. Was your test done perfectly?
33. Why wasn't this lesson learnt by you?

34. How long has their work been done?
35. He couldn't be helped.
IV/
1. have known
2. ever
3. being arrested
4. was made
5. already
6. feel
7. long
8. so
9. Which
10. musician
11. at
12. inconvenient

Đây nha ;vv
10. The situation is serious. Something must be done before it's too late.
11. The concert has been postponed.
12. A new supermarket is going to be built next week.
13. Has the car been repaired by your father?
14. Bananas are exported to Europe.
15. We were advised not to go out alone.
16. The book was found in his bag.
17. We aren't allowed to leave the room.
18. He is being laughed at by some naughty boys.
19. Hiss exercises have just been finished.
20. Grass was being cut when it began to rain.
21. Much of it wasn't used effectively. 
22. Is a new school being built for the poor?
23. He hasn't been seen since last week.
24. Was fish cooked for dinner?
25. The shop was being searched by police when the keeper arrived.
26. His exercises were finished on time.
27. Rice is planted in those fields.
28. My windows were broken by this boy yesterday.
30. He has been known well.
31. He will be met at the station.
32. Was your test done perfectly?
33. Why wasn't this lesson learnt by you?

34. How long has their work been done?
35. He couldn't be helped.
1. have known
2. ever
3. being arrested
4. was made
5. already
6. feel
7. long
8. so
9. Which
10. musician
11. at
12. inconvenient